[NVIDIA][Hybrid] Shader path not found after 0.50.1 update (HYPRLAND_SHADER_DIR ignored)

[Begasgug]

Problem description:
After updating Hyprland to version 0.50.1 on Arch Linux (hyprland-git from AUR), I constantly get the error: Screen shader path not found!

The HYPRLAND_SHADER_DIR variable is set correctly, but the shader directory is either not recognized or ignored — even after downloading the official shaders package.

System info:
OS: Arch Linux (fully updated)
GPU: NVIDIA RTX 2050 (dGPU) + AMD Vega (iGPU, hybrid setup)
NVIDIA Driver: 575.64.03
Hyprland version: 0.50.1 (AUR hyprland-git)

Steps I tried:
1.Created shaders folder ~/.config/hypr/shaders
2.Downloaded shaders from official 0.50.1 release and extracted them
3.Verified folder (currently shows no .frag files)
4.Set environment variables in hyprland.conf:

env = HYPRLAND_SHADER_DIR,/home/begasugu/.config/hypr/shaders
env = WLR_RENDERER,vulkan
env = LIBVA_DRIVER_NAME,nvidia
env = GBM_BACKEND,nvidia-drm
env = __GLX_VENDOR_LIBRARY_NAME,nvidia
env = WLR_NO_HARDWARE_CURSORS,1

5.Also exported these vars in .zshrc
6.Fully reinstalled Hyprland via AUR

Result:
Error appears every session:
[WARN] Screen shader path not found
[ERROR] Failed to compile shader: /home/begasugu/.config/hypr/shaders/screenShader.frag
[WARN] Shader "screenShader" not found in /home/begasugu/.config/hypr/shaders
echo $HYPRLAND_SHADER_DIR shows correct path inside session
hyprshade also fails with "Shader not found"

Additional notes:
On previous Hyprland version (0.49.x) shaders worked fine
Might be related to GLSL 4.60 update or hybrid GPU setup
Shader folder currently empty (no .frag files present after extraction)

Logs:
https://pastebin.com/nkXweptR - hyprland.conf
https://pastebin.com/d59aV7fw - hyprland.log

Questions:
Is HYPRLAND_SHADER_DIR still supported in 0.50.1?
Did shader naming change (.frag → .glsl)?
Are there additional steps needed for NVIDIA hybrid systems?

Temporary workaround:
Disabling shaders removes the error, but it’s not ideal:
misc {
disable_hyprland_shader = true
}

[gulafaran]

what is

misc {
disable_hyprland_shader = true
}

and what is HYPRLAND_SHADER_DIR

thats not a upstream config option nor environment variable?

[Begasgug]

Yeah, I realized that now - 'HYPRLAND_SHADER_DIR' was mentioned in some older guides/community posts but it seems it’s not an upstream variable anymore. Same with 'disable_hyprland_shader', that was suggested as a workaround by other users, not part of official config.

I’ve removed those and placed the shaders in '/usr/share/hyprland/shaders', but I still get the "Screen shader path not found" error on 0.50.1 (hybrid NVIDIA + AMD setup). Seems like shader loading changed in 0.50.x and might be broken for hybrid GPUs

[gulafaran]

No, its not. something local is broken. im using a hybrid setup, my guess is the shader isnt gles3.0 updated or your hyprde config is wrong

[Begasgug]

Good to know it works for you. My shaders are the default ones from 0.50.1 release (copied to /usr/share/hyprland/shaders). Config is clean, no custom HYPRLAND_SHADER_DIR anymore.

How can I check if the shaders are GLES 3.0 compatible? And does hybrid NVIDIA + AMD default to GLES even if I set WLR_RENDERER=vulkan?

[gulafaran]

Hyprland hasnt used wlroots for a good while, so no WLR_RENDERER doesnt matter, and its a screenshader error you have , somewhere in that config of yours decoration:screen_shader is set to something

[Begasgug]

Thanks a lot!! You were right — I found 'screen_shader' set in my userprefs.conf pointing to a non‑existent shader. Removed that line and the error is gone. Appreciate your help!!!